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Pressureless sintering of Si3N4 ceramics with oxide additives in different packing powder

Lookup NU author(s): Emeritus Professor Derek Thompson

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Abstract

The investigation of pressureless sintering of Si3N4 ceramics with oxide additives in different packing powder was presented. Si 3N4-5% MgO mixtures were densified in different packing powders in the carbon furnace for 30 min under a nitrogen atmosphere, to determine an optimum packing powder and to show the effect of packing powder. The weight losses inevitably occur due to the volatility of MgO, when MgO-containing silicon nitride mixes are pressureless sintered. The maximum density was obtained at sintering temperatures of 1650°C, from the samples that were pressureless sintered with additional silica.

Publication metadata

Author(s): Demir V, Thompson DP

Publication type: Article

Publication status: Published

Journal: Journal of Materials Science

Year: 2005

Volume: 40

Issue: 7

Pages: 1763-1765

Print publication date: 01/04/2005

ISSN (print): 0022-2461

ISSN (electronic): 1573-4803

Publisher: Springer

URL: http://dx.doi.org/10.1007/s10853-005-0688-6

DOI: 10.1007/s10853-005-0688-6

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